| 摘要 |
PURPOSE:To enable the designing of tool angle for the die to be manufactured at any value as desired, using electrodes whose side surface is perpendicular to the bottom surface, by applying discharge processing while the electrodes rotate on a plane in accordance with the tool angle being requested for the die to be manufactured. CONSTITUTION:Discharge processing is carried out while the electrodes 5 rotate on a plane including the bottom surface in accordance with the size of the tool angle requested for the die to be manufactured, employing electrodes 5 whose sides are perpendicular to its bottom. For example, the above mentioned electrodes manufactured by wire-cut discharge processing, is lowered perpendicularly against the work 4 to be manufactured as die, and bored down to 52 by discharge processing. While the electrodes 5 are being lifed in the next stage, discharge processing continues by rotating electrodes 5 on a plane, initially slowly but increasing rotation speed as shown 53 and 54, and weld-cutting is performed as shown by oblique lines 6,6. In this constitution, by selecting the length of rotation radius, a desired tool angle requested by the die to be manyfactured is obtained. |
